"Age of Ultron is about Ultron, one of our biggest villains ever, finally fulfilling his destiny, which is taking the Earth," said Bendis. "From the very first page, Ultron has taken the Marvel Universe and everything is changed.

"There is a shocking amount of destruction and devastation. It started in Avengers, but it's meant to be a Marvel Universe book. It starts everyone. This was never supposed to be my last Avengers story, it was always meant to be a Marvel Universe event."

The event will run for 10 issues, with Hitch illustrating the first five and Peterson and Pacheco dividing the remainder up between them. Three issues will be released in March and three in April, before the title becomes bi-weekly.

"We came up with a schedule that allowed us to tell the whole story is a shorter amount of time and get to the big stuff. The last pages are so shocking that only six people in the world know what is happening," said editor Tom Brevoort.

"The artists don't know. People from Marvel on this call don't know. Some of my best friends are going to call me after this and ask me and I will not tell them."